Picker check



Oct. 16 .1923. 1,470,821

' R. D! CRISTO PI CKER CHECK Original Filed Sept. 10. 1921 Patented Got. 1%, 123.

RALPH or CEIS'IO, OF NATICK, RHODE ISLAND, ASSIGNOR, TO DRAPER CORPORATION,

OF HOPEDALE, MASSACHUSETTS, A. CORPORATION L'LAINE Brenna CHECK.

' Application filed September 10, 1921, Serial No. 499,789. Renewed au ust 27, 1923.

To all whom it may concern Be it knownthat I, RALPH DI (knew, a subject of the King of Italy, residing at Natick, inthe count-y of'Kent and State of Rhode Island, have invented certain new and useful Improvements in Picker Checks. of which the following is a specification.

This invention relates to picker checks for looms, and has for its object to provide a simpleand effective device of this character which is placed in the path of travel of the picker stick to check its motion in both directions whereby the picker is assisted to arrest the force of the blow of the flying shuttle and also to assist in arresting the picker after a sharp impulse has been given to the same for the purpose of throwing the shuttle across the lay. I

lVith these and other objects in view, the invention consists of certain novel features of construction as will be more fullv described, and particularly pointed out in the appended claims. I

In the accompanying drawings:

Figure 1 is a top view of the lay showing my improved picker check as applied thereto and positioned in the path of the picker stick.

Figure 2 is a side elevation of the mechanism illustrated in Figure 1; also showing the spring for pressing inward the shuttle swell. I

Figure 3 is a sectional end elevation illustrating my improved check as applied to the la Figure 4 is an enlarged top view illustrating the general operation of my improved picker check.

With reference to the drawings, the shuttle 10 is mounted to be thrown as usual across the lay 11 by the picker stick 12. which stick is mounted in the usual way to extend upward from beneath the lay through the slot 13 therein and to swing in this slot for the purpose of driving the shuttle across the lay and also to receive the flying shuttle and fall back under its impact to its starting point at the outer end of this slot.

It is found in practice to be of advantage to provide means for assisting the picker stick in absorbing the shock of the flying shuttle and to bring it to a rest to prevent excessive rebound. To do this I have provided a roll 14 with an enlarged center opening 15 through which I have passed a comparatively small bolt 16 to yieldably'secure thissroll to the under side; of the lay. A Washer 17 is placed beneath the head of the bolt to cover the enlarged opening and provide a sliding surface for the face of the roll. This roll 14 is of a size and is so positioned that the innerportion 18 of its periphery is adapted. to extend into the path of movement of the picker stick 12 as it moves from one end of itsthrow to the other, and this roll is pressed inwardly into this engaging position by means of a flat spring 19 which has its upper end secured by a bolt 20 to the side of the lay, whereby the pressure of this spring forces theinner surface 22 of the center opening of the roll to normally lie against the side of the bolt 16, so that when the picker stick moves past this roll the latter is rotated and forced back against the spring tension to permit the stick to pass; thus serving as a check upon the movement of the stick. v p

In some instances it is found of advantage I to provide an'adjusting screw 23 through the spring 19' so that its tension may be regulated tonicely control the checking effect of the roll upon the picker stick when passing the same.

By adjusting my improved picker check intermediate the ends of the stroke of the picker stick, in addition to providing a check for the stick when driven outwardly by the shuttle, it also serves to absorb in a measure the moving force of the stick after its first throwing impulse upon the shuttle.

My improved picker check is very simple and practical in construction, inexpensive to manufacture and may be readily applied to a loom, and by its use the excessive force due to the rapid movement ofthe picker stick is in a measure absorbed in its travel in both directions. 1

The foregoing description is directed solely towards the construction illustrated,- but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible. the invention being defined and limited only by the terms of the appended claims.

I claim: 7 r

1'. A picker check for looms comprising in combination 'a picker stick, a rotatable roll mounted on the lay intermediate the extremities of the throw of said stick, said roll having a portion normally extending into the path of travel of said stick and adapte to be engaged thereby to force the roll radially inwardly and also to rotate the roll in passing to check the motion of the stick. in both directions.

2. A picker check for looms comprising in combination a picker stick, a spring-pressed roll carried by the lay and having an enlarged central opening loosely fitting its bearing, a spring for yieldingly forcing the periphery of said roll into the path of travel of said stick whereby the roll is adapted to yield radially and also to rotate when engaged by the stick on both its forward and a backward strokes.

3. A picker check for looms comprising in co1n'bn1at1on a picker stick, a spring-{pressed roll carried by the lay and having a portion of its periphery extending into the path of 4 travel of said stickto be e ngaged by it in passing and to yield radially and to rotate upon being engaged by the passing stick in both its forward and backward strokes and a spring engaging the outer periphery of said roll to press it inwardly and also serve as a brake to control its rotation while in contact with the stick.

In testimony whereof I afiix my signature.

RALPH DI CRISTO. 

